docs: def list_tickets(self, open_status=True, closed_status=True):
          """List all tickets.
  
          :param boolean open_status: include open tickets
          :param boolean closed_status: include closed tickets
          """
          mask = """mask[id, title, assignedUser[firstName, lastName], priority,
                    createDate, lastEditDate, accountId, status, updateCount]"""
  
          call = 'getTickets'
          if not all([open_status, closed_status]):
              if open_status:
                  call = 'getOpenTickets'
              elif closed_status:
                  call = 'getClosedTickets'
              else:
                  raise ValueError("open_status and closed_status cannot both be False")
  
          return self.client.call('Account', call, mask=mask, iter=True)